Harry Styles and Liam Payne feared they may have caught the disease after visiting a sanctuary in Brisbane during their trip to Australia.


© Rex Features / Newspix/Nathan Richter/Rex Features
Up to 80 per cent of koalas in Australia are infected with the STI. The singers were told they could be carrying it after holding 3-year-old Kat.
Payne told The Sun: "I'm genuinely scared. This is worrying. I'd have never picked the thing up if I'd known."
The spread of chlamydia among koalas is a major threat to the future of the species, although transmission to humans is unlikely.
Payne and Louis Tomlinson recently bungee jumped off Auckland's Sky Tower
> One Direction: Rise of the world's biggest boyband - pictures
Take a look through our gallery of One Direction visiting a koala sanctuary below:










